| article html file updated | 31 August 2025 07:13 CEST | Update | https://www.mdpi.com/1996-1073/13/1/75 |
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| article pdf uploaded. | 22 December 2019 07:15 CET | Version of Record | https://www.mdpi.com/1996-1073/13/1/75/pdf |
| article xml uploaded. | 22 December 2019 07:15 CET | Update | https://www.mdpi.com/1996-1073/13/1/75/xml |
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